/*
 * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Adam Dunkels <adam@sics.se>
 *
 */
#include "tcpecho.h"

#include "lwip/opt.h"

#if LWIP_NETCONN

#include "lwip/sys.h"
#include "lwip/api.h"
/*-----------------------------------------------------------------------------------*/
static void
tcpecho_thread(void* arg)
{
    struct netconn* conn, *newconn;
    err_t err;
    LWIP_UNUSED_ARG(arg);

    /* Create a new connection identifier. */
    /* Bind connection to well known port number 7. */
#if LWIP_IPV6
    conn = netconn_new(NETCONN_TCP_IPV6);
    netconn_bind(conn, IP6_ADDR_ANY, LOCAL_PORT);
#else /* LWIP_IPV6 */
    conn = netconn_new(NETCONN_TCP);
    netconn_bind(conn, IP_ADDR_ANY, LOCAL_PORT);
#endif /* LWIP_IPV6 */
    LWIP_ERROR("tcpecho: invalid conn", (conn != NULL), return;);

    printf("The local port number is%d\n\n", LOCAL_PORT);

    /* Tell connection to go into listening mode. */
    netconn_listen(conn);

    while (1) {

        /* Grab new connection. */
        err = netconn_accept(conn, &newconn);
        /*printf("accepted new connection %p\n", newconn);*/
        /* Process the new connection. */
        if (err == ERR_OK) {
            struct netbuf* buf;
            void* data;
            u16_t len;

            while ((err = netconn_recv(newconn, &buf)) == ERR_OK) {
                /*printf("Recved\n");*/
                do {
                    netbuf_data(buf, &data, &len);
                    err = netconn_write(newconn, data, len, NETCONN_COPY);
                } while (netbuf_next(buf) >= 0);
                netbuf_delete(buf);
            }
            /*printf("Got EOF, looping\n");*/
            /* Close connection and discard connection identifier. */
            netconn_close(newconn);
            netconn_delete(newconn);
        }
    }
}
/*-----------------------------------------------------------------------------------*/
void
tcpecho_init(void)
{
    sys_thread_new("tcpecho_thread", tcpecho_thread, NULL, 512, 4);
}
/*-----------------------------------------------------------------------------------*/

#endif /* LWIP_NETCONN */
